From Webster’s, the definition of “worry:”
“an uneasy state of mind usually over the possibility of an anticipated misfortune or trouble”
From Baz Luhrman’s classic, Sunscreen:
“Don’t worry about the future; or worry, but know that worrying is as effective as trying to solve an algebra equation by chewing bubblegum.”
I like that definition, with the double dose of uncertainty – the possibility of an anticipated misfortune…. Still, that’s me over there in the corner chewing bubblegum until I get the answer to the algebra equation.